The two authors are curators for the Landis Valley Museum which features a good colleciton of Lancaster County firearms. This lengthy journal article that provides not only details of the rifles, but how they grew out of eurropean rifles and then were adapted to the American colonist's environment and needs. The authors concentrate on the technical details for making the rifles. It includes subjects such as bullets and bullet molds, decorations, and sighting. Includes technical data and illustrations.